Atomic Weights and Isotopic Compositions for Californium
 Isotope   Relative
Atomic Mass 		    Isotopic
  Composition  		 Standard
Atomic Weight 		  Notes 
 
98 Cf 249 249.074 8539(23)   
250 250.076 4062(22)   
251 251.079 5886(48)   
252 252.081 6272(56)   

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